Interlock control system for a work machine

An interlock control system for controlling certain operations of a work machine wherein such system includes a first switch coupled to an operator restraint mechanism, a second switch coupled to the operator seat, a third switch operable to control the operation of the parking brake mechanism, and...

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Bibliographische Detailangaben
Hauptverfasser:	SWICK, W. CHRIS, UEIL, STEVEN T, WAITT, REID W, SCHENCK, RAYMOND T
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL DREDGING FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES SOIL SHIFTING TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	An interlock control system for controlling certain operations of a work machine wherein such system includes a first switch coupled to an operator restraint mechanism, a second switch coupled to the operator seat, a third switch operable to control the operation of the parking brake mechanism, and an electronic controller coupled to all three switches for receiving signals therefrom, the controller outputting a signal to enable the drive mechanism and the implement control system when the controller receives signals from the first, second and third switches indicative of the fact that the operator is present in the seat, the operator restraint mechanism is positioned in its restraining position, and the parking brake switch has been actuated to release the parking brake. With the drive mechanism and implement control system enabled, a second activation of the parking brake switch will disable the drive mechanism and set the parking brake, but it will not disable the implement control system. In addition, regardless of the particular operating mode, as soon as the interlock controller senses that either the operator restraint mechanism has been moved out of its restraining position and/or the operator is no longer present in the seat, the controller will disable the drive mechanism and the implement control system, and it will apply the parking brake.